Which term describes the most noticeable or important aspect of a situation?

The term that describes the most noticeable or important aspect of a situation is "salient." In various contexts, this word signifies that something stands out prominently due to its significance or relevance, effectively drawing attention to itself. In surveying and various technical fields, recognizing salient features can be critical for decision-making and assessment.

In contrast, "defeasible" pertains to a right or a legal claim that can be annulled or voided under certain conditions, making it less relevant when discussing prominent characteristics. "Latent" refers to something that exists but is not yet developed or manifest, suggesting a hidden quality rather than one that is readily noticeable or important. Lastly, "reversion" generally deals with property rights and refers to a future interest that returns to the original owner after certain conditions are met, which does not align with the concept of visibility or importance in a situation. Thus, "salient" is the most appropriate term in this context.